Strategy for "Adult" Content

I’m building a blog for a poet. Some of the poems have adult content. They are not pornographic by any stretch but I wonder if they ought to carry some kind of warning and I am not sure how to go about it. The poems are really either comic or “saucy” but with a sexual theme. Of course another strategy might be to ignore it altogether so as not to draw attention to it!

Anyway, I have already been able to seperate posts by using category pages – catgory-post.php; category-poem.php so I’m wondering if that might be the way to go but I don’t want a third “page” option based on “Adult.”

Many thanks

Martin